#!/usr/bin/env bash

# Copyright (c) 2016 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

C1_IP="172.16.1.2/24"
C1_GW="172.16.1.1"
C2_IP="172.16.1.3/24"
C2_GW="172.16.1.1"

INSTR=()
CMD=()
INSTR+=("Welcome to the bridging demo. This will show you some simple commands to connect two linux containers to VPP via an L2 bridge.")
CMD+=("")

INSTR+=("To show interfaces type:")
CMD+=("sudo vppctl show inter")

INSTR+=("Lets examine our workloads cone and ctwo")
CMD+=("sudo lxc-attach -n cone -- ip -o a")

INSTR+=("")
CMD+=("sudo lxc-attach -n ctwo -- ip -o a")

INSTR+=("To add interfaces, we add the host-side of the veth link pair.")
CMD+=("ip link")

INSTR+=("The links we need to add are link1 and link2 so lets add them with")
CMD+=("sudo vppctl create host-interface name link1; sudo vppctl create host-interface name link2; sudo vppctl show inter")

INSTR+=("Change the links state to up")
CMD+=("sudo vppctl set interface state host-link1 up; sudo vppctl set interface state host-link2 up; sudo vppctl show inter")

INSTR+=("Add IP addresses for the other end of each veth link")
CMD+=("sudo vppctl set interface l2 bridge host-link1 1;  sudo vppctl set interface l2 bridge host-link2 1")

INSTR+=("You can also see the bridge-domain")
CMD+=("sudo vppctl show bridge-domain 1 detail")

INSTR+=("At long last you probably want to see some pings")
CMD+=("sudo lxc-attach -n cone -- ping -c3 172.16.1.3")

INSTR+=("")
CMD+=("sudo lxc-attach -n ctwo -- ping -c3 172.16.1.2")

INSTR+=("Thanks for doing the bridging demo. To restart this demo and type these commands yourself. vagrant ssh; sudo /vagrant/netns.sh; cat /vagrant/bridging.cmd")
CMD+=("")
